1,470 research outputs found
COGNITO – The graphics and content delivery module
The poster presents the two main components for the graphics and content delivery module of COGNITO system. One Augmented reality player is presented as well as one editor of multimedia content to be used in the player (augmented information)
Enrouleur avec une rampe porte asperseurs, une alternative au canon automoteur
Traveling sprinkler systems usually use a large volume gun-sprinkler that requires high operating pressures. These sprinklers deliver water at high application rates with large drops that can damage some plants and can also destroy soil surface structure, in some cases leading to
surface sealing which reduces soil infiltration causing runoff. They can also be characterized for having low uniformity applications, especially in windy areas.
The use of a line with medium or low-pressure sprinklers, mounted in the system-moving vehicle, instead of the gun-sprinkler, can be an alternative to the use of traveler systems in some crops and topographic conditions. The smaller sprinklers require less operating pressure, apply water with smaller drops and their overlapping can increase the irrigation uniformity.
Field tests were made to evaluate the performance of the traveler machine with a line of four
sprinklers (250 kPa) and a gun-sprinkler (350 kPa), with three different travel speeds, corresponding to three different application depths, and different wind speeds.
In windy conditions, with wind speeds between 1,4 and 4,0 m/s, and a single pass, the irrigation events with the line of sprinklers produced more uniform irrigation events, especially in the low quarter, than the gun-sprinkler. Evaporation and wind drift losses were slightly higher with the
line of sprinklers, although these events had higher potential application efficiency.
The systems performance can be increased with the overlapping of the irrigated strips, with similar increments for both system options
Produção normativa não estatal : pluralismo jurídico na área econômica
Esta dissertação busca analisar a existência de pluralismo jurídico nas áreas econômica e comercial, a partir de duas alterações verificadas na produção jurídica normativa e decisória. A primeira, ocorrida no direito econômico após a virada do Estado de Bem-Estar Social para o Estado Regulador, em que houve a abertura para a iniciativa privada de diversos setores da economia, com a criação de novos mercados concorrenciais que passaram a ser regulados pelas Agências Reguladoras, fazendo surgir o que se convencionou chamar de direito híbrido, estatal, mas produzido com a participação do setor regulado, não derivando, portanto, diretamente dos Parlamentos. A segunda alteração refere-se à produção normativa e decisória não estatal, em especial aquela que se dá na área comercial, onde se verifica a abertura do mercado decisório à concorrência,
dividindo os juízes estatais espaço com os árbitros privados, tanto na solução de casos concretos, quanto na construção da norma jurídica que regerá a disputa submetida à decisão. Assim, se na sentença o juiz estatal cria a norma jurídica que define a conduta a ser observada pela parte submetida à sua jurisdição, o árbitro privado faz o mesmo ao elaborar o laudo arbitral. A tese se divide em três partes. Na primeira, de caráter teórico, são expostas tanto as correntes de pensamento que sustentam ser monopólio estatal a produção de normas jurídicas, como as teses que possibilitam relativizar tal monopólio, demonstrando que o direito pode derivar de fontes não estatais. A segunda parte, apoiada nos elementos teóricos da primeira, avança para uma exposição sobre fatos ocorridos e casos concretos, narrando a transferência de ativos estatais para a iniciativa privada, ocorrida no Brasil com a criação de estruturas regulatórias próprias, bem como se dedica ao exame de produções normativas oriundas unicamente de fontes privadas, dotadas de eficácia social e convicção de obrigatoriedade, que pautam o comportamento em determinadas atividades. A terceira e última parte presenta as conclusões deste trabalho.This dissertation seeks to analyze the existence of legal pluralism in the economic and commercial areas, based on two changes in the normative and decisive legal production. The first occurred in economic law after the turn of the welfare state to the regulatory state, where the opening to private enterprise of various economic sectors, with the creation of new competitive markets that were now regulated by regulatory agencies, giving rise to what is conventionally called hybrid, state law, but produced with the participation of the regulated sector, not deriving directly from parliaments. The second amendment concerns non-state normative and decision-making, especially in the commercial area, where the decision-maker is open to competition, with state judges
sharing space with private arbitrators, both in solving concrete cases and in building of the legal norm that will govern the dispute submitted to the decision. Thus, if in the judgment the state judge creates the legal rule that defines the conduct to be observed by the party subject to its jurisdiction, the private arbitrator does the same in preparing the arbitration award. The thesis is divided into three parts. The first is of a theoretical nature, which exposes currents of thought that maintain that state monopoly is the production of legal norms and theses that make it possible to relativize this monopoly, demonstrating that law can derive from non-state sources. The second part, supported by the theoretical elements of the first, advances to an exposition about facts and concrete cases, narrating the transfer of state assets to the private initiative that occurred in Brazil with the creation of own regulatory structures, as well as to the examination of productions rules from exclusively private sources, endowed with social efficacy and a conviction of obligation, guiding the behavior of certain activities. In the last part are the conclusions
ENTRE O DEVER DE VIGILÂNCIA E O DIREITO À PRIVACIDADE DA CRIANÇA E ADOLESCENTE
Recognition of the underaged as a subject of law and the family functional profile for the well being and development of autonomy and personality of its members led to changes in the institute of family power, where parents collect legal positions . With the advance of child development , its ability to hold free and responsible choices widens . To consider the privacy and intimacy of children and adolescents raises questions about possible conflict with the duty of care and supervision inherent to family power. The text asks the possible right to privacy and intimacy of the minor in the face of parents, ascertaining their reconciliation with the duties of parental authority. The central premise that is adopted is that the intrusion into privacy is only justified in the best interests of the underaged.O reconhecimento do menor como sujeito de direito e o perfil funcional da família em favor do bem estar e do desenvolvimento da autonomia e personalidade dos seus membros provocaram alterações no instituto do poder familiar, em que os pais colecionam posições jurídicas. Com o avançar do desenvolvimento da criança, sua capacidade de realizar escolhas livres e responsáveis se amplia. A considerar a privacidade e intimidade das crianças e adolescentes questiona-se acerca de eventual conflito com o dever de cuidado e vigilância inerente ao poder familiar. O texto indaga sobre eventual direito à privacidade e intimidade do menor em face dos pais, averiguando a sua conciliação com os deveres da autoridade parental. A premissa central que se adota é a de que a intromissão na intimidade somente se justifica no melhor interesse do menor
Comparando o Uso de Mensuração;Forward-Looking; e Contemporânea de Desempenho na Formulação de Contratos de Incentivo Quando Existe o Problema do Horizonte: Uma Análise Experimental
;Este artigo compara o uso de mensuração;forward-looking;e contemporânea de desempenho em contratos de incentivo na presença do problema do horizonte. Para tanto, foi utilizado um experimento de fator único entre sujeitos, pré e pós-tratamento, com grupo de con trole. A pesquisa teve a participação de 76 estudantes de graduação, divididos em 3 grupos, e registrou-se que, em comparação ao grupo de controle e ao grupo de tratamento vinculado à mensuração contemporânea de desempenho, os participantes submetidos ao contrato que recompensava com base na mensuração;forward-looking;agiram de modo mais congruente com o objetivo de longo prazo estabelecido para a tarefa experimental. Consistente com as predições da teoria da agência, o principal achado desta investigação sugere que o lucro econômico ajuda a mitigar o problema de miopia gerencial, indicando que incorporá-lo aos contratos motiva os agentes a agir de modo mais consistente com os objetivos de longo prazo da empresa, mesmo na presença do problema do horizonte. Além disso, a pesquisa re gistrou novas evidências da inadequação da formulação de contratos de incentivo baseados em medidas de desempenho distorcidas, tal como o lucro contábil.;;This study compares the use of forward-looking and contemporary performance measurement in incentive contracts in the presence of the horizon problem. To do this, we used a single-factor experiment between pre- and post-treatment subjects, with a control group. The study had the participation of 76 undergraduate students, divided into 3 groups, and it registered that, when compared to the control group and the treatment group linked to contemporary performance measurement, the participants under the contract that rewarded having a forward-looking measurement as a basis acted more congruently with the long-term goal set for the experimental task. Consistent with predictions of the agency theory, the main finding of this research suggests that economic profit helps mitigating the problem of manage rial myopia, indicating that incorporate it to contracts motivates agents to act more consistently with the company's long-term goals, even in the presence of the horizon problem. Besides, the study registered new evidence of the inadequacy of formulating incentive contracts having distorted performance measurements as a basis, such as book profit.
Gait event detection in controlled and real-life situations: repeated measures from healthy subjects
A benchmark and time-effective computational method is needed to assess human gait events in real-life walking situations using few sensors to be easily reproducible. This paper fosters a reliable gait event detection system that can operate at diverse gait speeds and on diverse real-life terrains by detecting several gait events in real time. This detection only relies on the foot angular velocity measured by a wearable gyroscope mounted in the foot to facilitate its integration for daily and repeated use. To operate as a benchmark tool, the proposed detection system endows an adaptive computational method by applying a finite-state machine based on heuristic decision rules dependent on adaptive thresholds. Repeated measurements from 11 healthy subjects (28.27 +/- 4.17 years) were acquired in controlled situations through a treadmill at different speeds (from 1.5 to 4.5 km/h) and slopes (from 0% to 10%). This validation also includes heterogeneous gait patterns from nine healthy subjects (27 +/- 7.35 years) monitored at three self-selected paces (from 1 +/- 0.2 to 2 +/- 0.18 m/s) during forward walking on flat, rough, and inclined surfaces and climbing staircases. The proposed method was significantly more accurate (p > 0.9925) and time effective ( 0.9314) in a benchmarking analysis with a state-of-the-art method during 5657 steps. Heel strike was the gait event most accurately detected under controlled (accuracy of 100%) and real-life situations (accuracy > 96.98%). Misdetection was more pronounced in middle mid swing (accuracy > 90.12%). The lower computational load, together with an improved performance, makes this detection system suitable for quantitative benchmarking in the locomotor rehabilitation field.This work has been supported in part by the Fundacao para a Ciencia e Tecnologia (FCT) with the Reference Scholarship under Grant SFRH/BD/108309/2015, by the Reference Project under Grant UID/EEA/04436/2013, and part by the FEDER Funds through the COMPETE 2020-Programa Operacional Competitividade e Internacionalizacao (POCI)-with the Reference Project under Grant POCI-01-0145-FEDER-006941, and in part by Spanish Ministry of Economy and Competitiveness Grant RYC-2014-16613
Ensino on-line emergencial num contexto de crise provocada pela covid-19: vivências de professores da educação básica em Alagoas
Resumo: A pandemia de covid-19, deflagrada em março de 2020 à sociedade, constituiu-se num cenário atípico e abrupto à educação. Em virtude do isolamento e distanciamento social, a escola precisou adequar os seus processos educativos a um contexto distanciado da sua realidade metodológica, lançando-se às soluções massivas de tecnologias digitais de informação e comunicação (TDIC) ancoradas no ensino on-line emergencial (EOE). Nesse contexto, a busca por vivências dos professores em tempos de covid-19, diante dos desafios da cultura digital, revelou “nuances” sociais e de formação docente limitantes ao ideário de educação para o século 21. Nessa conjuntura, este estudo qualitativo, apoiado na teoria fundamentada de caráter descritivo, investigou como os professores da educação básica das redes pública e privada em Alagoas, nas etapas de ensino fundamental e médio, vivenciaram o EOE num cenário de crise provocada pela covid-19 em 2020, demarcando os desafios e as limitações. A pesquisa foi realizada com 237 professores, por meio de questionários semiestruturados, aplicados entre abril e julho de 2020, os quais analisaram as seguintes categorias: “equidade digital”, “recursos escassos” e “formação para a utilização das TDIC”. Por conseguinte, a investigação pôde inferir que os desafios e as limitações foram acentuados pelo anacronismo metodológico e pela condição social de estudantes e professores. Além disso, os impactos da pandemia sobre a educação podem repercutir possíveis alterações dos espaços escolares e processos educativos
Predicting satisfaction: perceived decision quality by decision-makers in Web-based group decision support systems
In future, the organizations' likelihood to endure and succeed will depend greatly on the quality of every decision made. It is known that most decisions in organizations are made in group. With the purpose of supporting decision-makers anytime and anywhere, Web-based Group Decision Support Systems (GDSS) have been studied. The amount of Web-based GDSS incorporating automatic negotiation mechanisms such as argumentation has been steadily increasing. Usually, these systems/models are evaluated through mathematical proofs, number of rounds or seconds to propose (reach) a solution. However, those techniques are not very informative in terms of the decision quality. Here, we propose a model that intends to predict the decision-makers' satisfaction (perception of the decision quality), specifically designed to deal with multi-criteria problems. Our model considers aspects such as: meeting's outcomes, decision-maker's intentions, expectations and emotional cost. To validate the proposed model in terms of its ability to predict decision-makers' satisfaction, we developed a prototype of a Web-based GDSS to be used in a case study where the participant had to make a joint decision. The decision process consisted in a set of 5 rounds, where the participant could (re) configure his/her preferences along the process. The satisfaction model ascertained its ability to predict the participants' satisfaction and allowed to understand that (as is stated in the literature) the inclusion of cognitive and emotional variables is essential to evaluate satisfaction more accurately.This paper is a revised and an expanded version of a paper entitled "Evaluating the Perception of the Decision Quality in Web-Based Group Decision Support Systems: A Theory of Satisfaction" presented at International Conference on Practical Applications of Agents and Multi-Agent Systems 2017, Porto, Portugal [12]. This work has been supported by COMPETE Programme (operational programme for competitiveness) within project POCI-01-0145-FEDER-007043, by National Funds through the FCT - Fundacao para a Ciencia e a Tecnologia (Portuguese Foundation for Science and Technology) within the Projects UID/CEC/00319/2013, UID/EEA/00760/2013, NORTE-01-0247-FEDER-021958, and the PhD. grants SFRH/BD/89697/2012 and SFRH/BD/89465/2012 attributed to Joao Carneiro and Pedro Saraiva, respectively
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